Indigofera hendecaphylla

Indigofera hendecaphylla, the creeping indigo or trailing indigo, is a species of flowering plant in the family Fabaceae. It is native to the Old World Tropics and Subtropics, and has been introduced to various locales, including Japan and Australia. It was widely introduced as a forage plant when it was thought to be conspecific with Indigofera spicata, and then shown to be toxic to nearly all livestock, with some uncertainty as to which species was tested....read more on Wikipedia.